<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div th:fragment="mainContent" th:replace="base::common_left(~{::.item})">
    <div class="item layui-nav-item"><a href="/student/test">查询</a></div>
</div>
</body>
</html>